Display area and key layout of a telephone handset



FIG. 1 is a front view of the display area and key layout of a telephone handset;

FIG. 2 is a right perspective view thereof; and,

FIG. 3 is a left perspective view thereof.

The telephone handset shown in broken lines is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a display area and key layout of a telephone handset, as shown and described. 